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Storm Dry is a colourless, breathable, water-repellent treatment for bricks, concrete and stone walls. It is supplied in the form of a deeply penetrating cream that is applied to the wall surface in a single coat using a roller or brush. Once Storm Dry has been applied it will permeate deeply into the masonry before curing to form a water-repellent barrier.

Storm Dry is based on carefully selected silanes and siloxanes which line the pores of the masonry to form a water-repellent silicone matrix. Because it works by lining the pores rather than blocking them, the masonry is allowed to breathe, and does not suffer from an increased risk of frost damage (spalling). Due to its novel formulation and deep penetration, Storm Dry is highly resistant to UV light and other forms of degradation, resulting in a life expectancy of 20-30 years. Storm Dry should only be applied to porous surfaces. It should not be applied over sealed or painted surfaces and is intended for above-ground use only.